I found this interesting: http://www.scientificamerican.com/articl...protection
For most, putting on deodorant is a necessary ritual on par with brushing teeth or washing hands. But for people who produce no armpit stench, it is totally unnecessary.
Despite that, nearly three-quarters of those people still use deodorant daily, a new study finds.
The findings, published January 17 in the Journal of Investigative Dermatology, show just how much a person's daily life is dictated by what's considered normal.
"They're spending their money, exposing their skin to what may in a few instances not be good for their skin. It sort of suggests to me that there are a lot of conformists around," said study co-author Ian Day, a genetic epidemiologist at the University of Bristol. [10 Odd Facts About the Female Body]
Smelly genes
Several years ago ago, scientists discovered that a gene called ABCC11 determined whether people produced wet or dry earwax. Interestingly, people who produce the "dry" version of earwax also lack a chemical in their armpits that bacteria feed on to cause underarm odor.
"This key gene is basically the single determinant of whether you do produce underarm odor or not," Day said.
While only 2 percent of Europeans lack the genes for smelly armpits, most East Asians and almost all Koreans lack this gene, Day told LiveScience.
No one knows exactly why gene prevalence varies so much between populations, but its absence in East Asia suggests that being stinky was evolutionarily selected against there over the last several thousand years, he said.
For most, putting on deodorant is a necessary ritual on par with brushing teeth or washing hands. But for people who produce no armpit stench, it is totally unnecessary.
Despite that, nearly three-quarters of those people still use deodorant daily, a new study finds.
The findings, published January 17 in the Journal of Investigative Dermatology, show just how much a person's daily life is dictated by what's considered normal.
"They're spending their money, exposing their skin to what may in a few instances not be good for their skin. It sort of suggests to me that there are a lot of conformists around," said study co-author Ian Day, a genetic epidemiologist at the University of Bristol. [10 Odd Facts About the Female Body]
Smelly genes
Several years ago ago, scientists discovered that a gene called ABCC11 determined whether people produced wet or dry earwax. Interestingly, people who produce the "dry" version of earwax also lack a chemical in their armpits that bacteria feed on to cause underarm odor.
"This key gene is basically the single determinant of whether you do produce underarm odor or not," Day said.
While only 2 percent of Europeans lack the genes for smelly armpits, most East Asians and almost all Koreans lack this gene, Day told LiveScience.
No one knows exactly why gene prevalence varies so much between populations, but its absence in East Asia suggests that being stinky was evolutionarily selected against there over the last several thousand years, he said.
![[Image: smile.gif]](https://rooshvforum.network/images/smilies/smile.gif)
![[Image: Dove-Men-Deodorant.jpg]](http://www.mommylivingthelifeofriley.com/wp-content/uploads/2011/06/Dove-Men-Deodorant.jpg)
![[Image: 41wEPeNQ6TL._SY450_.jpg]](http://ecx.images-amazon.com/images/I/41wEPeNQ6TL._SY450_.jpg)